1163645 has 8 divisors (see below), whose sum is σ = 1595904. Its totient is φ = 797904.

The previous prime is 1163641. The next prime is 1163651. The reversal of 1163645 is 5463611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1163645 - 2² = 1163641 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16589 + ... + 16658.

It is an arithmetic number, because the mean of its divisors is an integer number (199488).

2^1163645 is an apocalyptic number.

It is an amenable number.

1163645 is a deficient number, since it is larger than the sum of its proper divisors (432259).

1163645 is an equidigital number, since it uses as much as digits as its factorization.

1163645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33259.

The product of its digits is 2160, while the sum is 26.

The square root of 1163645 is about 1078.7237829954. The cubic root of 1163645 is about 105.1816959870.

The spelling of 1163645 in words is "one million, one hundred sixty-three thousand, six hundred forty-five".